| Sampling date | Al | Ba | Fe | Mn |
| Total |
| |||
| February | 1819.8 | 16.5 | 625.7 | 8.4 |
| April | 13.6 | 2.7 | 25.3 | 0.5 |
| June | 1.1 | 0.9 | 5.1 | 0.1 |
| September | 11.7 | 1.8 | 21.4 | 0.4 |
| November | 14.7 | 2.8 | 29.4 | 0.9 |
| Dissolved |
| |||
| February | 8.5 | 15.9 | 7.5 | 7.1 |
| April | 0.6 | 2.1 | 0.6 | 0.3 |
| June | 0.2 | 0.6 | 0.2 | 0.1 |
| September | 0.4 | 1.4 | 0.4 | 0.2 |
| November | 0.8 | 2.2 | 0.8 | 0.6 |